Make Skia compatible with Android NDK r16

Changes to Skia that are necessary to make Chromium compile with
Android NDK r16, which switches to unified headers.

Sister CLs:
src/third_party/android_tools/ndk: https://chromium-review.googlesource.com/c/android_ndk/+/784230
src/: https://chromium-review.googlesource.com/c/chromium/src/+/777822

Bug: chromium:771171
Change-Id: I3d35df5b99d8eb7d7d938d21b5aecdf4c2d5da0f
Reviewed-on: https://skia-review.googlesource.com/75422
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Mike Klein <mtklein@chromium.org>
1 file changed